Jennifer Lopez and Enrique Iglesias are still in the planning stages for their first-ever world tour together this summer. Their 20-city North American jaunt kicks off July 14 in Montreal, Quebec and winds down on Sept. 2 in Orlando.

Although J. Lo is currently in South America on her Dance Again World Tour, the pair have been hashing out ideas for their joint trek. "We have been working on different things for the past few months," says Lopez. "As far as what we will do on stage together … I'm coming back in a few weeks [and] we're going to figure out what we are exactly gonna do on stage together. And that will be the fun part of it and a surprise for everybody."

As far who is going to open and close the tour, that matter might be settled with a coin toss. "We are still talking about that -- I think that Enrique should close," insists Lopez. "I'll go first so I can be home in time to put the babies to bed." Iglesias adds, "We'll figure it out as the tour goes along."

So what are Lopez and Iglesias' pre-show regimen before they hit the stage?

"I don't do anything but sit [alone] in my dressing room and drink rum," jokes Iglesias. "Nah, but I do have a sip of rum to get rid of the nerves before I go out on stage."

For J.Lo, it's all about the burn. "I have to stretch a lot and warm-up because I have to dance," she says. "I like getting real [warmed up]. But I don't have any weird [pre-show rituals]. I like to get pumped and super [warmed up] before I go out there."